Consolidated Statements of Operations shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) $ / shares shares
Income Statement [Abstract]
Revenue	$ 515,160
Cost of revenue	437,417
Gross profit	77,743
General and administrative expenses	54,848
Sales and marketing expenses	4,798
Restructuring charges	2,930
Gain on change in fair value of contingent consideration, net	4,438
Gain on sale of business	0
Operating income	19,605
Interest expense	2,945
Other income (expense) (including interest income of $66 in 2020, $50 in 2019, and $8 in 2018)	(1,897)
Income before income tax expense	14,763
Income tax expense	4,927
Net income	$ 9,836
Basic weighted average shares outstanding (in shares) | shares	16,608
Diluted weighted average shares outstanding (in shares) | shares	16,696
Per common share data:
Basic earnings per share (in dollars per share) | $ / shares	$ 0.59
Diluted earnings per share (in dollars per share) | $ / shares	$ 0.59